the article mentions a concert entitled "Seder-Matzochism"

Soce the Elemental Wizard is a gay, white, Jewish rapper with whom I have performed at a couple of variety shows. He has been getting mad press lately -- first, there was an an article in the New York Press, and today he had a link on Gawker.

I'm not sure if he's still doing the wizard thing -- one article cited him as "Soce the Elemental Rapper" -- but I once saw him come on stage in a full wizard costume, complete with pointy hat decorated with moons and stars, and launch into a song that began:

I grew up in the meadow / that's different from the ghetto
Soce can also 1) freestyle like a motherfucker, and 2) rap over classical music.

Here's his sort of signature song, the acoustic version. He's just freaking fantastic.